| Rose Hips 550 mg | Solaray | 550 mg | — | Capsule |
| C From Nature | Purium | 300 mg | — | Capsule |
| Immune Support | Vimerson Health | 250 mg | — | Capsule |
| Ultra-C 2000 mg Sustained Release | NaturesPlus | 200 mg | — | Tablet or Pill |
| Advanced Leg & Veins Solution | Totally Products | 160 mg | — | Capsule |
| Mark XV | DC | 150 mg | — | Tablet or Pill |
| KN-FLX | Loomis Enzymes | 150 mg | — | Capsule |
| Kdy | Loomis Enzymes | 140 mg | — | Capsule |
| ExcellZyme | TransFormation The Genesis of Good Health | 110 mg | — | Capsule |
| Vitamin C 1000 mg Sustained Release | NaturesPlus | 100 mg | — | Tablet or Pill |
| Vitamin C 1000 mg with Rosehips Sustained Release | NaturesPlus | 100 mg | — | Tablet or Pill |
| Whole-Food Multivitamin plus Vital Minerals for Women | Dr. Mercola | 100 mg | — | Tablet or Pill |
| Vitamin C 1000 mg with Rosehips | NaturesPlus | 100 mg | — | Tablet or Pill |
| Immune Relax | Vimerson Health | 100 mg | — | Capsule |
| IvD | Loomis Enzymes | 80 mg | — | Capsule |
| T1 To T3 Nsl | Chiro-Zyme | 80 mg | — | Capsule |
| Nsl | Loomis Enzymes | 80 mg | — | Capsule |
| Pro-NH3 | Loomis Enzymes | 75 mg | — | Capsule |
| T1 To T2 Opt | Chiro-Zyme | 60 mg | — | Capsule |
| SLP | Loomis Enzymes | 60 mg | — | Capsule |
| C-1000 TR | MBi Nutraceuticals | 60 mg | — | Tablet or Pill |
| T9 To T10 Adr | Chiro-Zyme | 60 mg | — | Capsule |
| Opt | Loomis Enzymes | 60 mg | — | Capsule |
| Adr | Loomis Enzymes | 60 mg | — | Capsule |
| BCAA 6 g Strawberry Lemonade | Nutricost Women | 50 mg | — | Powder |
| Buffered Vitamin C 1000 | Vinco | 50 mg | — | Capsule |
| Vitamin C 1,000 mg | OL Olympian Labs | 50 mg | — | Tablet or Pill |
| BCAA 6 g Green Apple | Nutricost Women | 50 mg | — | Powder |
| BCAA 6 g Grape | Nutricost Women | 50 mg | — | Powder |
| BCAA 6 g Pink Drink | Nutricost Women | 50 mg | — | Powder |
| BCAA 6 g Peach Mango | Nutricost Women | 50 mg | — | Powder |
| PTTNGR | Loomis Enzymes | 50 mg | — | Capsule |
| BCAA 6 g Watermelon | Nutricost Women | 50 mg | — | Powder |
| SvG | Loomis Enzymes | 50 mg | — | Capsule |
| Performance Pack | NeoLife Sport | 45 mg | — | Capsule |
| Vitamin C 1000 mg with Rose Hips | Nature's Blend | 45 mg | — | Tablet or Pill |
| C 1000 mg with Rose Hips | 21st Century | 37 mg | — | Tablet or Pill |
| Meta-Syn | Loomis Enzymes | 30 mg | — | Capsule |
| Prime Pack | NeoLife | 25 mg | — | Other (e.g. tea bag) |
| Vitamin C 1000 mg with Rose Hips | Nature's Way | 25 mg | — | Capsule |
| Vitamin C 1,000 mg with Rose Hips | Nature's Way | 25 mg | — | Capsule |
| C 500 mg plus Bioflavonoids & Wild Rose Hips | Nature's Truth | 25 mg | — | Other (e.g. tea bag) |
| FitTabs | Beverly International | 25 mg | — | Tablet or Pill |
| Vitamin C 240 mg Gummy Natural Orange | Meijer | 20 mg | — | Gummy or Jelly |
| T1 To T7 Rsp | Chiro-Zyme | 20 mg | — | Capsule |
| Rsp T1 To T7 | Thera-Zyme | 20 mg | — | Capsule |
| Rsp | Loomis Enzymes | 20 mg | — | Capsule |
| Endurance | NeoLife Sport | 20 mg | — | Tablet or Pill |
| Vitamin C Buffered C-1000 | Healths Harmony | 18 mg | — | Tablet or Pill |
| Vitamin C | Healths Harmony | 18 mg | — | Tablet or Pill |
| Buffered Vitamin C Chewable 485 mg Natural Orange Flavor | Solaray | 15 mg | — | Other (e.g. tea bag) |
| Vitamin C 500 mg plus Rose Hips | Woodstock Vitamins | 15 mg | — | Tablet or Pill |
| Lvr-Spl | Loomis Enzymes | 11 mg | — | Capsule |
| Vitamin C 1000 mg | up&up | 8 mg | — | Tablet or Pill |
| Bone Reinforcer | Wonder Laboratories | 8 mg | — | Tablet or Pill |
| Children's Chewable Vitamins Papaya and Orange Flavor | Genestra Brands | 5 mg | — | Tablet or Pill |
| C 500 mg plus Wild Rose Hips | Nature's Truth | 5 mg | — | Tablet or Pill |
| C 1,000 mg plus Wild Rose Hips | Nature's Truth | 5 mg | — | Other (e.g. tea bag) |
| Vitamin C 500 mg with Natural Rose Hips | up&up | 5 mg | — | Tablet or Pill |
| Chewable Vitamin C Natural Cherry Flavor | Little DaVinci | 5 mg | — | Tablet or Pill |
| Immufight Maximum Daily Defense | Solaray | 4 mg | — | Capsule |
| Super C-500 Complex | Puritan's Pride | 4 mg | — | Other (e.g. tea bag) |
| Immufight Immune Response Support | Solaray | 3.4 mg | — | Capsule |
| Chewable Acerola C 500 mg Sweet & Tangy Berry Flavor | Puritan's Pride | 2.4 mg | — | Other (e.g. tea bag) |
| Acerola Cherry Chewable C 500 mg Fruit Flavor | Source Naturals | 2 mg | — | Tablet or Pill |
| Mega Vita Min for Seniors | Puritan's Pride | 2 mg | — | Other (e.g. tea bag) |
| Iron All | Puritan's Pride | 2 mg | — | Tablet or Pill |
| Rose Hip | Ron Teeguarden's Dragon Herbs My Cup of Tee | 1 Gram(s) | — | Other (e.g. tea bag) |
| 30 Day Night Slim Skinny Tea | Totally Products | 0 NP | — | Other (e.g. tea bag) |
| Wonder-C Orange TangerineDiscontinued | Codeage Nanofood | 50 mg | — | Liquid |
| Combination A PTTNGRDiscontinued | Loomis Enzymes | 50 mg | — | Capsule |
| C Complex 500 mgDiscontinued | Nature's Blend | 40 mg | — | Tablet or Pill |
| C-1000Discontinued | Source Naturals Wellness | 25 mg | — | Tablet or Pill |
| C 1,000 mg plus Bioflavonoids & Wild Rose HipsDiscontinued | Nature's Truth | 18 mg | — | Other (e.g. tea bag) |
| Chewable C 1,000 mg plus Wild Rose Hips Natural Orange FlavorDiscontinued | Nature's Truth | 15 mg | — | Tablet or Pill |
| PureWay-C 1,000 mgDiscontinued | Vitamin Discount Center | 10 mg | — | Tablet or Pill |
| Source of Life Gold Drink Mix Delicious Tropical Fruit FlavorDiscontinued | Nature's Plus | 0 NP | — | Powder |